Public class Base{int w, x, y ,z;

Public Base(int a,int b){x=a; y=b;}

Public Base(int a, int b , int c , int d)

{// assignment x=a, y=b

w=d;z=c;}

}

在代码说明// assignment x=a, y=b 处写入如下 个代码是正确的。

Public class Test{static long a[] = new long[10];

Public static void main ( String arg[] ) {System.out.println ( a[6]);}

}

则下面 个语句是正确的。

Public class Sub extends Super{//overload

}

Which method, placed at overload, will cause a compiler error?

{public static void main(String[] args)

{String a=args[1];String b=args[2];String c=args[3];}

}

Execute command:java Test Red Green Blue

What is the value of c?

Public class X extends Frame

{public static void main(String[] args)

{X x=new X();x.pack();x.setVisible(true);}

Public X(){setLayout(new GridLayout(2,2));

Panel p1=new Panel();add(p1);

Button b1=new Button("One");p1.add(b1);

Panel p2=new Panel();add(p2);

Button b2=new Button("Two");p2.add(b2);

Button b3=new Button("Three");p2.add(b3);

Button b4=new Button("Four");add(b4);

}

}

When the frame is resized,________

class B extends A{void who(){System.out.print("B");}}

则顺序执行如下语句后输出的结果为 。A a=new B();B b=new B();

a.who();b.who();

class MyClass

 { int var=100；

 static int getVar()

 {return var;}

} 

public class MyClass

 {int data；

 void MyClass（int d）

 {data=d；}

 } 

public class A implements Runnable

 {Thread mt=Thread(this);

 mt.start();

 public void run()

 {System.out.println("I am alive now");}

 }

public class IfElse

 {public static void main(String args[])

 {if(odd(5))System.out.println("odd");

 else System.out.println("even");

 }

 public static int odd(int x){return x%2;}

 }

class Parent

{void printMe(){System.out.println("parent");}

}

class Child extends Parent

{void printMe(){System.out.println("child");}

void printAll()

{super.printMe();

this.printMe();

printMe();

}}

public class A

{public static void main(String args[])

{Child myC=new Child();

myC.printAll();

}}